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TruSat Technical Reference Manual
After installing the Trend Download board
4–10
WARNING: Power OFF and disconnect the monitor from external power
before performing any procedure that involves disassembly of the monitor.
WARNING: Internal electronic components are susceptible to damage by
electrostatic discharge. To avoid damage when disassembling the monitor,
observe the standard precautions and procedures for handling static-
sensitive components.
Tool: Phillips screwdriver, #1
Figure 4-4. Alarm event relay switch (S1) in the DISABLED position
1.
Power OFF and disconnect the power cord and other cables from the monitor.
2.
On the right (ComWheel) side of the monitor, loosen the 3 screws until you can lift
the bumper assembly away from the housing.
3.
Note the orientation of the ComWheel encoder cable and the speaker cable. Each is
"keyed" for correct connection to the System board. Carefully disconnect both
cables from the System board and remove the bumper assembly.
4.
Locate the alarm event relay switch on the Trend Download board. It is circled in
Figure 4-4. Gently move the white lever to the ENABLED position.
5.
Connect the speaker cable and the ComWheel encoder cable to the System board.
Position the cables inside the housing to ensure they will not be pinched.
6.
Place the bumper assembly over the housing and tighten the 3 screws.
Important: Test the monitor. See Functional check earlier in this chapter.
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